/*
 * Copyright (c) 2010-2023. Axon Framework
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.axonframework.common.lock;

/**
 * No-op implementation of a {@link Lock}. Does nothing on {@link #release()} and returns {@code true} for
 * {@link #isHeld()}.
 *
 * @author Steven van Beelen
 * @since 4.5.11
 */
public class NoOpLock implements Lock {

    public static final Lock INSTANCE = new NoOpLock();

    private NoOpLock() {
        // Retrieve version through static INSTANCE.
    }

    @Override
    public void release() {
        // Not implemented for this no-op version.
    }

    @Override
    public boolean isHeld() {
        return true;
    }
}
